A tiger is born with white coloring as a result of a mutation from the recessive gene of a Bengal tiger. Interestingly, a white tiger tends to be larger than common orange-colored tigers, which possess normal genes. Estimations show that white tigers occur about once in 15,000 Bengal tiger births.
In general, tigers are the largest cats in the world. They live in both hot and cold jungles and forests. Sadly, tigers are endangered, with estimates of only 5,000 to 7,000 of these big cats left in the world. White tigers tend to be very popular at zoos and wildlife refuges, helping to bring more awareness to their endangered status. It has been established that the white tiger serves no apparent conservation purpose, and there are already a large number in captivity. Because of this, once common inbreeding has become unnecessary.